chore: snapshot comment authors before user deletion

convex/users.ts

@@ -118,6 +118,33 @@ export const deleteUser = mutation({
       throw new ConvexError("Usuário ainda está atribuído a tickets");
     }
 
+    const comments = await ctx.db
+      .query("ticketComments")
+      .withIndex("by_author", (q) => q.eq("authorId", userId))
+      .collect();
+    if (comments.length > 0) {
+      const authorSnapshot = {
+        name: user.name,
+        email: user.email,
+        avatarUrl: user.avatarUrl ?? undefined,
+        teams: user.teams ?? undefined,
+      };
+      await Promise.all(
+        comments.map(async (comment) => {
+          const existingSnapshot = comment.authorSnapshot;
+          const shouldUpdate =
+            !existingSnapshot ||
+            existingSnapshot.name !== authorSnapshot.name ||
+            existingSnapshot.email !== authorSnapshot.email ||
+            existingSnapshot.avatarUrl !== authorSnapshot.avatarUrl ||
+            JSON.stringify(existingSnapshot.teams ?? []) !== JSON.stringify(authorSnapshot.teams ?? []);
+          if (shouldUpdate) {
+            await ctx.db.patch(comment._id, { authorSnapshot });
+          }
+        }),
+      );
+    }
+
     await ctx.db.delete(userId);
     return { status: "deleted" };
   },